I have a problem with my phone system. There are three phones which used to ring aloud at the same time the console rang. These three phones no longer ring out loud. If the console operator is on the phone noone can hear other lines ringing into our office. Is this a programming problem or a hardware problem? There are the fourth, fifth and sixth phones which do ring after approx three faint rings from the console. Please direct me in the correct direction and provide a possible solution. Thank you!